Set MapboxMap flags during gestures and animations

[macdrevx]

Pull request checklist:

• Briefly describe the changes in this PR.
• Write tests for all new functionality. If tests were not written, please explain why.
• Document any changes to public APIs.
• Apply changelog label ('breaking change', 'bug 🪲', 'build', 'docs', 'feature 🍏', 'performance ⚡', 'testing 💯') or use the label 'skip changelog'
• Update the changelog

Summary of changes

• Internal flags are now set appropriately when gestures or animations begin and end. This fixes an issue in which raster tiles appeared to wobble during animations and gestures.
• Fixes an issue in which GestureManagerDelegate.gestureEnded(for:willAnimate:) was not called for the single tap gesture
• BasicCameraAnimator now enforces that it must be in a paused state when continueAnimation(withTimingParameters:durationFactor:) is invoked.
• MapboxMap has new public methods beginAnimation(), endAnimation(), beginGesture(), and endGesture(). Use these when implementing custom gestures or animations. Each begin invocation must always be paired with an end invocation.

[tobrun]

[macdrevx]

I realized there's a small problem with this implementation. I'll be pushing another commit soon.